In this lab the subjects are presented with an illusion similar to the ponzo illusion. The subjects adjust the stimuli until they think it is the same size as the target. Of course the visual cues in the illusion cause the subjects to misperceive the correct sizes of the objects. Students are to record the data, chart it and then answer questions based on their data.
I have included 3 versions with either 100, 80 or 40 trials. You can pick the one that is best suited for your students.
This lab runs in Java. Like many things java it can be cool as long as Java works. In the labs at my school this can be hit and miss. Today in the lab 9/29/14 only about 1/5 of our computers had a new enough version of java to make the lab work. Before you try this activity check your labs to see if it will work. At our school the students do not have enough permissions to run updates on plugins…ugh.
This lab is really cool and is based on the work of Dr. Huseyin Boyaci. I found a reference to Hussein Boyaci’s work in “Brain Sense: The Science of the Senses and How We Process the World Around Us” so I did a google search and found that a sample of his work is available online and then developed this activity around his lab.
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